Method of connecting the beveling-knives in circulab-cutting barrel



UNTTED sTATEs PATENT oEEroE.

IVM. BEVARD, OF MUSCA'I'INE, IOlVA.

METHOD OF CONNECTING THE BEVELING-KNIVES IN CIRCULAR-CUTTING BARREL-HEAD MACHINERY.

Specification of Letters Patent No.

To all whom it may concern.;

Be it known that I, IVILLIAM BEVARD, of the city of Muscatine and Stateof Iowa, have invented a new and useful Improvement Upon Machinery forCircling Barrel- Heads; and Ido hereby declare that the following is afull and exact description of the construction and operation of thesame, reference being had to the annexed drawings, making a part of thisspecification.

The letters A, A, upon the drawing represent the cast iron frame of themachine; B, C, the cast iron plates or disks, between which the piecescomposing the barrel-head are held; D, a spiral spring surrounding theshaft, to which the right hand disk C, is attached. This spring throwsback the disk C, that'the pieces of heading may be put in and taken out.

E, represents the driving pulley; F, F, F, the cast iron headssupporting the shaft and disks; H an eccentric lever, worked by thetreadle I, to force the right hand disk, C, toward the disk B and holdthe heading firmly while the bits are applied.

J is an iron step raised by the treadle O, O, to support the headinguntil held by the pressure of the disks B and C, and then lowered topermit the free revolution of the disks.

K, K, are hollow pillars to support the cylinders L, L.

L, L, are cylinders revolving horizontally in the pillars K, K, andsupporting the arms M and N. To these arms the bits are attached, andrevolving with the cylinders L, L, may be applied to or withdrawn fromthe heading, as the operation of circling and beveling requires.

V is the curved iron coupling connecting the arms M, and N, and by whichthe bit on the arm M, is brought to the heading at the same time withthe bit on the arm N, which arm N is also the lever by which, with theright hand, at one motion, the bits are applied to the heading. Thecoupling V is constructed so as to be extended, or shortened, at will,and is so situated, or attached to the arms M, N, that the bit on thearm M, though applied to the heading at the same moment with the bit onthe arm N, traverses, While cutting. but one-half the space traversed bythe bit on arm N,-thus with perfect accuracy cutting two-thirds of thehead on the right side, and one-third 19,066, dated January 12, 1858.

upon the left, and beveling to an edge, ready for use.

a., b, C, are forked springs on the inner surface of the disk C, nearthe circumference, and equi-distant from the center, inclining from thecenter of the disk, and sharpened at the point by an acute bevel on theinside of the sprig. These sprigs when forced into the wood by thetreadle I compress the pieces composing the head rmly together, and holdthe joints against the action of the bits in cutting.

G, is a regulator, by which the position of the disks with reference tothe bits may be changed from right to left, or left to right, increasingor decreasing the bevel on the outside of the head, as desired.

are screws to hold the arms M and N in place.

P is a piece of iron attached to the frame to hold the treadle I down.

Q and R are enlarged side views of bits- R right hand and Q left handbit.

S is an enlarged side view of the sprig, and a section of disk C,showing the inclination of the sprig from the center, and the bevelingofthe sprig itself to a point, from the inside.

T is an enlarged front view of a sprig, and a section of disk C.

In operating the machine the pieces to compose the head are droppedbetween the disks B and C, and rest upon the iron step J, which is heldup against or near the disks by the foot pressing down on the lever O.The right hand is then laid upon the end of the lever H, and by a slightpressure closes the disks and relieves the foot, which is then placedupon the treadle I, and applies the force necessary to hold the headingfirmly between the disks. The disks with the heading are then put inmotion, at a velocity of from five hundred to six hundred revolutionsper minute. The bits are next brought to the heading by one motion ofthe right hand upon the lever, or arm N, bringing both bits tooperation, and circling, beveling and chamfering the head at oneoperation. The force is then removed from the eccentric lever, H. Thespiral spring D, throws back the disk C, and the finished head is takenout-the' `whole operation requiring from thirty to thirty-tive seconds.

So perfect is the operation of this Inachine, that While it savesone-half the time,

by doing double the Work of any other machine, in a given time, thuseconomizing at least fifty per cent. of the cost of poWer and labor, italso does its Work so Well that every head is a true circle, and notimber is lost by splintering or shivering.

It is important in the manufacture of barrel heads, to make the bevel onthe outside of the head much less than on the inside whereby the headsare able to support a greater stress as the bevel will not be so liableto breakV off and it is also necessary to make 'all the heads exactlyalike Vin this respect, particularly When the barrel is made

